Plumb-bob.



PATENTED SEPT. 25

H. M00. CURRY.

PLUMB BOB.

APPLICATION FILED JAN.26,1906.

HILL MGOLELLAND CURRY, OF CALIFORNIA, PENNSYLVANIA.

PLUMB-BOB.

Specification of Letters Patent.

Patented Sept. 25, 1906.

Application filed an a y 26,1906. Serial No. 298.05%

T0 at whom it may concern:

Be it known that I, HILL MOCLELLAND CURRY, a citizen of the UnitedStates, residing at California, in the county of WVashington and Stateof Pennsylvania, have invented a new and useful Improvement in Plumb-Bobs, of which the following is a specification.

This invention relates generally to plumbbobs, and more particularly tocertain improvements upon the plumb-bob patented to me June 10, 1902,No. 702,288.

The object of my present invention is to provide certain improvements inthe mechanism for reeling the suspending-cord and whereby a cheaper,simpler, and more durable construction is provided; and with this objectin view my invention consists in the novel features of constructionhereinafter fully described, and pointed out in the claims.

In the drawings forming a part of this specification, Figure 1 is asectional elevation taken transversely through the plumbbob, and Fig. 2is a sectional elevation taken longitudinally through the plumb-bob.Fig. 3 is a detail perspective view.

In constructing a plumb-bob in accord ance with my invention I make thebody A in two longitudinal sections A, the opposing faces being flat andsmooth, and at their lower ends they are reduced and threaded, as shownat A upon which is screwed the point or tip B, said point or tip beingprovided with a threaded recess B into which the reduced and threadedends A screw, it being understood that when the reduced ends A areplaced together they produce a complete continuous screw. The sectionsare also provided with an upwardly-projecting externally-threaded neckportion A upon which the threaded cap or thimble C is screwed, said capor thimble having a central aperture C, through which thesuspending-cord D passes, said cord D passing through the passage-way Aproduced in the neck portion of the plumb-bob, and is connected to thereel E, which is located in a circular chamber F, produced in the bodyof the plumb-bob, said reel E turning upon a tubular shaft G, arrangedcentrally with reference to the circular chamber F and fixed within theplumbbob sections. A convolute spring H is arranged within the reel, theouter end of said spring being connected to a tongue E, punched from thereel, while the inner end is connected to a finger G, attached to thetubular shaft G, the purpose of said spring being to cause the reel torevolve for the purpose of winding the cord D thereon whenever the reelis released so as to permit said action.

A pin I is arranged in the tubular shaft G, the inner end of said pinbeing bent downwardly at a right angle, as shown at I, and Y carries astud I at its extreme lower end, said stud I being adapted to engage oneof a series of openings E produced in the adjacent face of the reel E,and for the purpose of normally holding the stud I in engagement withthe reel I employ a coil-spring K, seated in a recess K, whichcommunicates with the c.ir cular chamber, the end of said spring bearingagainst the flat shoulder I, produced at the angle or bend of the pin,and it will be noted that the lower side of the tubular shaft is cutaway, as shown at G in order to permit this back-and-forth movement ofthe angular pin I. The outer end I of the pin projects through theplumb-bob body and extends outwardly a sufficient distance to provide apush-knob for the purpose of actuating the pin when it is desired towind up the cord D. When it is desired to use the plumb-bob, the cord Dis pulled out through the thimble C, and in doing so the reel is causedto rotate, so that tension is applied to the spring contained withinsaid reel, and when it is desired to wind the cord upon the reel the pinI is pushed inwardly, and this forces the depending end I inwardly andwithdraws the stud I from the aperture E and the inner reel is theirfree to turn upon the tubular shaft, and in so doing the cord is drawninto the body of the plumb-bob and wound upon the reel. As soon aspressure is removed from the pin the spring K forces it into suchposition that the lug I will engage the apertured side of the reel.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. A plumb-bob consisting of a body composed of two longitudinalsections united at their upper and lower ends, a tubular shaft arrangedin the body, a spring-actuated reel turning upon said body and a pinarranged within the tubular shaft and having its inner end bentdownwardly and adapted for engagement with one side of the reel togetherwith means for normally holding said end in engagement with the reel, asset forth.

2. A plumb-bob comprising a body portion consisting of two longitudinalsections united at their upper and lower ends, a tubu- IIO lar shaftarranged in the plumb-bob body, a i the perforated side of the reel, aspring con- 10 reel upon which the cord is adapted to be tained withinthe plumb-bobbodyand adaptwound, said reel containing a spring one ended to bear against the pin for the purpose of of which is connected tothe reel and the projecting the outer end beyond the surface other endto the tubular shaft, one side ofthe of the plumb-bob, as set forth.

' reel having a plurality of openings produced HILL MGCLELLAND CURRY.

therein, a pin arranged in the tubular shaft Witnesses: v theinner endof which is bent downwardly RICHARD HAWTHORNE, and provided with a studadapted to engage GEORGE C. DENNEY,

